Crushing-machine.



T. L. & T. J.-STURTEVANT,

anusmm MACHINE.

APPLICATION FILED JULY 8, 1908.

Patented June 20, 1911.

4/ I I A/VE/VTORS;

QZM i la T. L. & T. 3;. STURTBVANT.

CRUSHING MAUHINE.

APPLICATION FILED J'ULY3,1908. Patented June 20, 1911.,

1 VB mm T. L. (is T. J.[STURTBVANT.

anusnme MACHINE. APPLICATION FILED JULY 3, 1908. 995 58, Patented June 20, 1911.

3 SHEBTS-SHEET 3.

' Be it known that we, Tnonres To all whom it may concern:

Norfolk and Stateof Massachusetts,

cinemas LEGGETT srunanvnnr, on" corner, aim/Trio AS sosnrnsrunmnvnnr, or

- 'WEL-LESLEY, Massachusetts, AESSIGNORS sr oonrens'rron 02' seems.

/ nrnvnn'r nxnn oomrnuv, A

Eatented June so, 1911.

VANT and THOMAS J. SEQURTEYZQNT, citizens of the Un1ted States, residing, respectively, at Quincy and Wellesley, in the count of ave invented or, discovered certain new and useful Improvements in Crushing-Machines,

f of, which the following is-a specification,

10, "'nying drawings. 3 K I This, invention relates as that classof reference being had therein ,to the accompa crushing mills comprisin'ga frotatin anvil 4 chine with ring with which elastically or yie d-ingly supported crushing or hammer rolls c061 crate in the crushing operation; and the invention comprises certain improvements in the machine of this class which is fully shown and 7 described in 1 our. Patent No. 906,829, grantedDecember. 15, 1908.

in the present improved machine the end head of the casing, by which the yieldingly' supported crushing rolls are sustained, is hinged to a stationary part of the casing so that it may be swung aside as a door .to aflord access to the interior of the casing, and also so as toexpose the crushing ele: ments carried by said end head when access to these parts, or to the interiorof the cas ing, is desired.- 7 v V The present invention also relates tosome other features of improvement; as will here ina'fter appear. H Pin the accompanying drawings, Figure 1 isa perspective view of the improved mathe hinged end head open or swung aside. Fig. 2 is a vertical section of said machine with the arts in working po sition. Fig. 3 is an en view of the machine looking from'the ri ht of Fig. 2;

Referrin to the rawi'ngs, 12 denotes the frame of t ing attached to the arms of said spid f by means of clamping bolts 17 having toe portions which engage the outer face of, said ring so" as to force it into ring of the spider, theseuterportion of the anvil ring having a, corresp The spider or or open-work said head may e machine provided with suit. able bearings 13 in which is journ'aled a the tapered hosed ease ta es 1 5T, being ofskeleton gmmiqn, permits-the reel duced or crushed material be discharged from both sides of said ring. The shaft 14: mag be driven in any suitable manner, but. W1

wheel 18 geared to the drivin shaft 19 carrying a pulley or pulleys 20 w ich will preferably have a suitable clutch connection with saiddriving shaft;

Secured to the frame of the machine is a "heavy casing part 21 whichincloscs the-r0:

tasting-anvil ring and the 'spider by which "said ring is carried, the said casin being closed at its endby a head 22- w ich is hinged to the said frame or to the stationary 23 which will preferably be fixed to the'sta- 'tionary part of the casing and-which may be encircled b suitable earsQl with which the said end ead is provided, so that the horizontally on the hinge afiorded by said .ears and bolt, to open or close the chamber of the casing. p

The crushm hammer rolls 25, which cooperate with t e anvil ring 16,'are fixed to leaves 26 which rotate on-bearing-pins or shaft's 27- suitably secured to blocks or carriers 28 pivotedjo arms or brackets 29 on the said end or other suitable material, and which. are secured to the pins or shafts 27,.being preferabl interposed between said pins or shafts an said sleeves 26. The present construction provides threeof these hammer rolls, but it will be understood that any desired nuinber thereof, from one to three or more may be em loyed, The said pins or shafts 27 are pre' era 1y. providedwi p ring sleeves of the crushing rolls.-

The crushing rolls- 25;,are' yieldingly forced toward-.i-the concave crushing face of the anvilj ring I16, asto' have a yieldin' hearing oh'thefinaitefiahtd be-crushed an which will be inter fused-[between gsaid face and said -rollfs ,;.by means of springs 33' housed 1n suitable-recesses in is lihlLGB fll'XlflBd or spider flbearign I H -or'lwas or ,36 between whih an V the bearing carriers}?! are inter abutments or half bal Mi H 7 Eur FFICE.

oil ducts 31 communicating with oil 011E232 for the convenientlubrication of the 7 need" {spherical-3;: v I 5 3 j h henter can; r sockets or cessesmthc Said blocks a preferably be provided with a gear,

part of the casing by means of a pivot bolt be swung back and forth head 22, half bushings 30- of br'ass bracket'ii l having a Cellillfih abutment or; screwf35jwhich abuts-19; ams't taldisk" bearing carriers 28 at points removed from them pivots, thereby alfordmg a yielding mounting for sa1d blocks or carriers and for the crushing rolls supported therefroi'n.

The fiat outer faces of the half balls 37 abut against a disk 'or washer 36, so as to permit slight sliding movements between these parts. The springs 33 encircle bolts 38 which are screwed into suitableprojections on the head 22, and the tension'of said springs can be varied by means of nuts 39 on said bolts abutting against, washers 40 which are in contact with the outer ends of "said springs. The, disk or washer 36, re-

ceiving the pressure of the springs 33 through the spider. bracket 84 andthe central abutment screw 35 carried by said bracket, serves to' equalize the pressure of.

, to be crushed is carried by said. ring the rolls 25 will be forced inward more or less against the stress of the springs 33 which will then exert a certain pressure on the crushing rolls to force them against the material interposed between them and the face of the anvil ring. The adjusting screw 35 also provides means whereby the pressure of the rolls 25 toward the inner face of the anvil ring can be regulated as to entirely withdraw the'said rolls from contact with said face, as is desirable or necessary when the swinging head or door-likev part 22, from which said rolls are supported and which carries said springs, is to be opened or closed. 7

The anvil ring 16 is preferably made somewhat wider than the peripheral or working faces of the hammer rolls 25, so as to afford a track on said ring wider than the crushing facesof the rolls. The material beingcrushed is normally held-on the hollow or concave working face of said anvil ring by centrifugal force, andwith this construe-- tion, which provideshammer rolls having peripheral fares narrower than the face of the anvil ring, or a ring having a working face wider than the faces of said rolls, very little uncrushed material will bepushed oil or discharged from the ring; and side shields, to hold the material from being too rapidly discharged or pushed off from said ring, will therefore not be required. It will be'understood that the crushed material will be discharged from both faces of the anvilring owing to the fact that said ring is carried by a spider or somewhat open carrier affording separated arms or parts between which the crushed material can be discharged, as more fully shown and described in our Patent No. 906,829, hereinbefore referred to..

The material to be crushed will preferlibly be fed to the anvil ring by a mechanical feeder l1 mounted on the swinging end head 22, and which feeder is or may be of the construction fully shown and described in our Patent No. v879,423, granted Feb. 18, 1908.;

The hinged or swinging end head is provided on its inner side with a feed spout 46 which will convey the material to be crushed from the said mechanical feeder 41 to the anvil ring. To facilitate the swinging movements of the head 22 from which the hammer rolls 25 and their carriers are supported, said head will preferably be provided with a bearing roller 42 running on a curved track 43 which will largely sustain the weight of said head, so

as to render the swinging movements coinparatively easy; and the vertical position of said head may be varied somewhat by an adj usting screw d4 tapped in the. upper ear 24 surrounding the pivot bolt 23. f

While we have herein shown a horizonk tally disposed driving shaft 14 rotating in fixed bearings and carrying an. anvil ring 16 rotating in a verticalplane within the casing forming the chamber of the mill, wedo not wish the term horizontal, as used with reference to the position ofthedriving shaft and the plane of movement of as swinging head or door 22, or-the term verti'cal, referring to'the position of the anvil ring, in the appended claims, to bestrictly,

limited to horizontal or vertical planes ;v as

it is obvious that the'mill might be tilted slightly, thereby changing the positions or planes of movement of the said shaft, head or door and ring, without departing from the invention; so that the terms horizontal and vertical, as used in the claimsin connection with the driving shaft, the swlnging head or door and the anvil r1ng, 1nay be understood to mean approximately horizontal and vertical.

It is frequently desirable to clean the working face of the. rotating anvil ring 16, so as to remove material which may become too much caked thereon, and to this end a pipe 45 is provided, and the inner end of which extends into the plane of rotation of said ring, and through which a jet of water or air under pressure may be forced, for the purpose of cleaning the face of said anvil ring. As herein shown the said pipe is mounted. on the hinged end head 22', and in such case some art of said pipe will preferably have a fexible connection with the source of supply of water; r compressed air,

so" that it maybe swung aside with said end head -.wfithout being disconnected or de- 'tached from said source vof supply. :Havingthus'described our invention we 5 claim and desire to secure by Letters Patent: i. Ina crushing machine, the combination with a vertically rotating anvil ring, of one orfinore hammer rolls cotiperating with said art and a vertically hinged part from l-wh1ch said roll or rolls are supported, so that by swinging said part aside horizontally said 'roll or rolls may be removed from or brought into cooperative relation with said ring. a 1

'2. In a crushing machine, the combination with a rotating anvil ring'and a casinginclosing same, of a hinged part forming the mend portion of said casing, and one or more" like 'part, and

1 hammer rolls cooperating with said ring and 3'0 ,su orted 'fromsaid hinged part so that =38! 'roll or r lls may beswung aside with the said hinged part when access'to the said rails or to the interior of the casing is de- ,-,.,flred. I

' i 3. In a crushing machine, the combination 'with a rotating anvil ringand a casing inclosing same,-of a hinged part forming a portion-of said casing, one or moreham- I :n er rolls coiiperating with said ring and supported from said hinged part so that said roll or rolls may be swung aside with the said hinged part when access to the said rolls or to the-interior of the casing, is desired, and mean's,'mou nted on said hinged- 3 part, for yieldingly forcing said roll or rolls toiivard the working face of said ring.

\ 4.1In a crushing machine, the combination with a rotating anvil ring and a casing inclosing same of a hinged-part forming a 40 portion of said casing, -one or more hammer 5 rolls cooperating with said ring and supported from said hinged part so] that said roll or rolls may-be swung aside with the said hinged part when. access to the said '45 rolls or to the interior of'the casing is de sired, and a mechanical feeder also sup- 7 ported by and movable with said hinged part. V p v v '5. Ina crushingmachine, the combination 5 with ai'rotating anvil ring, of a horizontal shaft by which said ring'is-carried, fixed hearings in which said shaft rotates, a casing. inclosing said ring and comprising a swinging head which closes one end of said casing, and whichis hingedso that it may be opened-imd closed like a door, and one or -more hammer rolls cooperating with said ,ring and supported from'said head, and thus movable'out of and into working"position' 6 by openingi'or closing said door-like part.

' 6. In a crushing machine, the combination witl a rotating anvil ring and a casing in closing same, said casing comprising :1

toward the crushing face of said ring,

' said hinged weight when it is swung in and out,

horizontally swinging door-like hinged part, of one .ornrore Y axmner rolls-cooperating with said ring, bearing carriers from which said rolls are supported and which are piv-' otally' mounted on the said swinging doorcarriers, for yieldingly pressing .the said hammer roll or rolls toward the crushing "face of said ring.

7. In a crushing machine, the combination with a horizontal shaft mounted in fix bearings, of an anvil ringcarried by sa d shaft, a casingfinclosing said ring, said casing comprising a door-like hinged part means acting on said bearingadapted to be swung aside horizontally of, one or more hammer rolls codperatmg with said ring, bearing carriers from which said rolls are supported and which are pivotally I mounted on the said door-like part, means, acting on said bearing carriers, for yieldingly'pressing said hammer roll or rolls means for adjusting the yielding pressure on said roll or rolls.

8. In a crushing machine, the combination with one or more hammer rolls, of a hing part supportin said roll or rolls and which is adapted to e swunglas ide horizontally, part being provided with a bearing roller to sustain a portion of its track on which said roller may run.

-9. In a crushing machine, the combination with an anvil ring rotating in a vertical plane, of a casing inclosing said ring peripherally and provided with ahinged end head,

a plurality of hammer rolls cooperating with said ring, a plurality of bearing-carriers pivotally mounted on said end head. and from which said rolls are supported, a

series'of springs cooperating with said bearing-carriers and serving to'yieldingly force the said rolls toward the working face of said ring, a spider bracket having a central. abutment, and a plate orwasher acted on by said central abutment and serving to com municate the pressure or stress of said springs to said pivoted bearing-carriers,

10. In a crushing machine, the combination with an anvil ring rotating in a vertical plane, of a casing inclosing said ring peripherally and provided with a hinged and head, a plurality of hammer rolls cooperating with said ring, a plurality of hearingand a' carriers pivotally mounted on said end head and from which said rolls are supported, a series otsprings coiiperating with said bearing-carriers and serving to yieldinglyforce the said rolls toward the working face of said ring, a spider bracket having an adjustsaid springs to said pivoted bearing-carriers.

11. In a crushing machine, the combina tion with a'horizontal shaft, of ananvil ring ,carried by-saidshaft and rotating in a ver- I said hinged awa from the workin face of said ri'n I y b C7 or brought into working 12. Ina crushing mac ine, the combination with a rotating anvil ring and an open-- Work carrier therefor, of spring-pressed hammer rolls cooperating'with'said ring,

' and a hinged part from which said hammer rollsare supported and which hinged part 1s provided with a feed spout to direct mate-- rial to be crushed to said rolls and ring, said open-work carrier permitting the reduced material to be discharged from both sides of said ring.

13. In a "crushing machine, the chmbination with a stationary casing, of a rotatin 4 cooperating and a hinged. door closing spr1ng-pressed hammer rolls with said ring,

the end of'the rolls being mounted on said door and being thus adapted to be swung aside therewith.

14. In a crushing machine, the combination with a stationary casing, of an anvil '35 ring rotating in a vertical-plane, hammer rolls cooperating with said ring, and a hingeddoor closing the end ofthe said easmg, said hammer-rolls being mounted on said. door and thus adapted to he swung Ag aside therewith.

.to' said anvil ring. p In a crushing machine, the comblnation with an dosing-said easingand said casing, said hammer.

15. In a crushing machine, the combination with a rotatin anvil ring,of a plurality of hammer roi 5 cooperatmg with said 7 ring, pivoted carriers .from whic'h sa d rolls are supported,means forex toward. said anvil rini, and an equalizing plate 'or device throng which the yielding pressure is imparted to' said carriers so that. such yielding-pressure will be properly distrihutedbetween theseveral carriers and'the hammer rolls supported therefrom. I I6. In a crushing machine the combina-, tion with a suitable casing comprising a head, as 22, closing the end of said casing, of an anvil ring rotatingin' a vertical plane within said casing, hammer rolls cooperating with said ring, and a mechanical feeding device, said end head being provided with a feed-spout to' convey the material .to be re .duced from said mechanical feeding device inclosing casing of an anvil ing rotating Withiiiif'Sa-id' casingg anj open-'f fis g -work carrier 91...3Qi T n p i apr ed anvil ring, an open-work carrier therefor, h

v ammer rolls also within operating with said ring, and a hinged I was or "b opene In testimony Whereofwe' afix our signatures, in presence of two witnesses.

' moms LEGGETT- STURIEVANT.

. THOMAS JOSEPH STURTEVANT.

W itnesses: I

W. H. ELLIS, i

'F. B. HEoKnR.

e'rting a yielding is pressure on said earners to .force' said rolls v so'that' access may he hadft'o" the 70. interior of the lattenwhen'it isldesire'dito aemove or replace any of the crushing meme 

